39380020

素因数分解:

$2^2\times 5^1\times {\mathrm{1969001}}^1$

素因数の和:1969010

約数の個数: 12

約数和(自身を含む): 82698084

約数和(自身を除く): 43318064

約数列:

[1, 2, 4, 5, 10, 20, 1969001, 3938002, 7876004, 9845005, 19690010, 39380020]

約数ペア:

[(1, 39380020), (2, 19690010), (4, 9845005), (5, 7876004), (10, 3938002), (20, 1969001)]